Lever lock for pressing machines



1953 J. M. BERNSTEIN ETAL 2,657,840

LEVER LOCK FOR PRES-SING MACHINES 2 Sheets-Sheet 1 Filed Aug. 9, 1951 Jacob M. Berks/sin Clarence E. Rater/son Jr.

INVENTORf I BY I J. M. BE RNSTE|N ET AL LEVER LOCK FOR PRESSING MACHINES Nov. 3, 1953 2 Sheets-Sheet 2 Filed Aug. 9, 1951 Jacob M. Bernstein Clarence E. Robertson, Jr.

INVENTORS.

Patented Nov. 3, 1953 1 mm cock tofii site mutate Athlete, 1951, si igi z iiidt "9 (01. tit es) invention comprises novel anji use ful ilii- 011; a H 1} e I "f1 tofbld and press the edges or movements in edge folding, machines, anq mope the fabric'artile. particularly pertains to improvements in means .Airugtner object of. this invention is to pijovi foz actuating the folding machine s, el I inwarclh'of the openin I I n h by fo up rn d on w. v afia ii n v on th forming P ate re qi i maq ipqwit n v .t W 4 i e ili fl hwfimmlfs" i5 engaged by the folding plate. to thereby press the View, taken upon the plane of the section line wh m t. 1TH, .nt X3 "I ,J' fiiw H ret s t h n an a end n e. o 25 rigitt 1 a r' fi t ry de vi e 1 t k operator for the edge folding device was i equired. the plane of the section line 55 of Figiir not only to maintain the manually operated form; 2 E1 is a, fragmentary side .e1 evatio ew ing plate and the f of fi'doformof theedge folding mach ne, e n. .7 ,7 of l w e away ndshowhin Secfiibii operated pressure platein the pr essing positionl i illiistrate detailsjof construction; and, I t Thus, one operator could not operate more than E' i'giire .7 is a fragmentary sectionalyiewtake'h one edge folding machine at one. time. a o onltlie plane o'fthe' section line 1- 1 ..pr ,mgur 6. In the present invention, a common means is Refeteiice is now made more specifically to the provided for moving the forming plate and the be ijj anymg drawings, wherein llke num mans' for moving thQ-Pi'ES-SiII-IIQ 46 inparallel spaced relation to each other. An I t opening. i8 01' the shape or the article being edged lockmg" the pressmg p1 m i 131.3115 M1 is provided iii the table top, and a similar f'g'is a a teiihg op ning aiutsn wn s pi'oylkled in; the

e opening l Th tired to. the to we release the operator; ,for other work while the ar clei being p essed-. o. t,

mother object of this. invention is to provide common means for actuatingthe iogmingplate, the folding plate, and the pressing plate in the 55 i 1811s the 1e sty I, 2e; A iting an is, provid'd W 3 A pair of folding plates 32 are movably shown in Figure 2, and into its inoperative posimounted on studs (not shown) carried by the base tion shown in Figure 3. plate I4 between the table top I2 and base plate The roller 18 is also adapted to engage a roller I4 for movement inwardly of the periphery of 18, which is mounted by trunnion 88 on the free the opening therein, to thereby fold over the edges 5 end of the presser plate operating arm 38, whereof the fabric article which are turned or bent by movement of the actuating member into its transversely of the article as the forming plate is looking position pivots the arm 38 in a countermcved into the opening I8. The pusher plate 34 clockwise direction, to thereby move the presser having a transverse car 38 thereon is provided for plate upwardly into pressing position. The arm moving the folding plates into their edge fold- 38 is yieldingly urged by the spring 82 in a clocking position, the folding plates being yieldingly wise direction as viewed in Figures 2 and 3, the urged by springs (not shown) into their retracted spring being attached at one end by fastener 84 ositi n. to the arm, and at the other end by rod 86 to the A pressing plate (not shown) is carried by the pusher plate. As is apparent from Figure 2, the arm 38 and is movable into engagement with the roller 18 projects above the arm and serves to reunderside of the forming plate 28, when the latleasably retain the actuating member in its lockter is in edge folding position, in response to lug position, the stiffness of the spring 84 relative downward movement of the left hand end of the to that of the springs 84 and 58 being designed so arm as viewed in Figures 1, 2, 3 and 6. In the that the parts function in this manner. devices heretofore developed, the lever 26 was 20 As will be appreciated, movement of the pusher swung downwardly into folding position by means plate 34, to the right, as viewed in Figure 2, causes of a handle which was pivotally mounted on the the folding plates 32 to move inwardly of the free end thereof, the handle then being pivoted p p y f the p n t e by fold the into engagement with the pressure plate to move upturned edges of the fabric article, that movethe folding plates into folding position, the arm ment of the pusher plate also serving to tension 38 being operated by separate foot pedal. The the spring 82 and increase the locking action exconstruction thus far described, except for the erted on actuating member 54. Thus, as the latch resilient mounting of the forming plate, is well member is urged into its keeper engaging posiknown, and has been described to facilitate tion by its actuating member, the force exerted understanding of the operating of the mechanism by the spring 58 which tends to urge the actuto be hereinafter set forth. ating member into its inoperative position, is de- In the embodiment shown in Figures 1-5, there creased, as the roller 18 engages the cam portion is rovided a latch plate 40, which is pivotally 16 s m e y. the looking a t e ed y mounted, by b lt 42 n th fr e end of th lever the roller 18 on the locking arm 38 is increased 28, a nose 44 being provided on the latch memdue to the increased tension on the spring 82 in ber for engagement with the ear 38on the pusher response to movement of the pusher plate.

plate whereby the latter is actuated in response The rollers 10 end must obviously be in to pivotal movement of the latch member. A Pr p n ent. and, for this purpose, the finger 46 on the latch member is adapted to enkeeper 43 i P f ly att ched to or formed gage a keeper 48 on base, and to prevent upward integrally with a pair of parallel guides 88 having swinging movement of the lever 28 in response to lo s 98 therein. through which fasteners 82 exthe yielding tension of spring 38 a spring 58 bet d to adiustably attach the guides and keeper ing secured to the latch member on the end on the front Wall 94 0! the base 16. The guides thereof remote from the finger 48 and to the engage opposite sides of the arm and present latbracket 52 on the lever 28, to thereby yieldably 45 ral ov m nt t r a s t s w 6 b ing carurg th latch member t 1 k e r engaging ried by the connected straps 88 on the lower end position. of the guide for engagement with the lower edge In order to move and releasably lock the latch of e front ll 94 t i tate a ju ment of member 48 in its keeper engaging position, there he guide. 7

is provided a bifurcated press shaped actuating 50 I e mo ifi d form of he invention shown in member 54, having a handl 56 th which is Figure '1, the sides of the slot I88 in the front wall pivoted, by bolts 58, at one end thereof to the ear 94 adequately guide the m d e keeper 68 on bracket 52. A finger 62 is provided to limit I02 having angulsted ped end p ns IN clockwise swinging movement of the actuating is edl'ustebly un d y fasten rs I" to the member, as viewed in Figures 2 and 3, in response front wall to the spring 64 which is secured, at one end, by In Figure 6, there is illustrated a modified form hooks 86 to the actuating member, the other end 0! latch and actuating m r wh h functions being secured by eye 58 to th l ver is, in a manner similar to that of the embodiment A roller 18 is mounted by bolts 12 between the Shown in R 1 The latch member is bifurcated portions of the other end of the acpivoted, at t0 the free d of e lever tuating member, the roller being adapted to enthe latch member having a nose 2 thereon gage first and second contiguous cam portions 14 adapted to -8 the 3 0n e pusher plate. and 18,respectively,of the latch member 48. The and a keeper engaging fi r The latch first cam portion 14 is such that when it is enmember is 37 8 3 urged out 01 keeper ga gaged with the roller 10, the spring to acting 65 ins Positim by spring 5 which has one end through the latch member 48 exerts a substantial Secured, as at t0 the end 0! the latch memb r tangential force on the actuating member, to remote {mm the finger and the end yieldingly retain the actuating member in upward cured! t0 h ever An actuating position, as is clearly illustrated in Figure 3. As member I12 comprises a p of spaced plates is apparent in Figure 2, the cam portion 18 is so end B conhectin! Web "5 is pivoted by 8 b designed that it exerts a substantially radial force In t0 the lever a handle being P e on the actuating member 54, when the cam porfor obvious reasons. A roller I32 is disp tion is engaged with the roller 18, whereby the tween the plates and rotatably secured thereto spring 58 does not materially tend to urge the by a pin I34 which roller is adapted to engage r-matiha member out of it locking positio contiguous cam surfaces I38, I38 and I48 on the beri-n a direction-such that the surface 136 egcerts a thrust on the roller I32 whichis substantially radial of the axis of rotation of the member, and the cam surface actuating member, when the respective cam surfaces engage the roller. A spring H6. therefore,

is effective to retain the actuating member in its the stiffness of the lever counterto move the lever is sufficient to move the actuating member relative thereto. The actuating member 54 or I22, as the ease presser plate into pressing position, the roller 18 on the arm being yieldingly urged by spring 82 into engagement with the roller with the actuat- From the foregoing, the construction and operation of the device will be readily understood and further explanation is believed to be unnecessary. However, since numerous modifications and changes will readily occur to those skilled in the art after a consideration of the foregoing specification and accompanying drawings, it is not desired to limit the invention to the exact construction shown and described, but all suitable modifications and equivalents may be resorted to, falling within the scope of the appended claims.

Having described the invention, as new is:

1. In a fabric edge folding device including a base plate having an opening therein, folding plat-es mounted for movement inwardly of the periphery of said opening, a pusher plate for moving said folding plates, a lever, and a forming plate mounted on said lever and movable therewith into edge forming position in said opening; a keeper in said folding device, and latch means pivotally mounted in said lever and What is claimed plate. H 2. In a fabric edge folding gagingiposition.

4. The combination of edge of said opening, ing said folding plates into edge folding posi- 6. In a fabric edge folding device including a pressing position.

7. In a, fabric edge folding device including a lever actuated forming plate and an arm actuated presser plate, said arm and lever being movable towards each other into their respective edge folding and pressing positions, a base plate having an opening therein between said lever and arm, folding plates movable inwardly of the edge of said opening, and a pusher plate for moving said folding plates into edge folding position; a latch plate mounted on said lever, a keeper in said base plate, and an actuating member pivlever and movable into latching position to urge said latch member sequentially into engagement with said pusher plate and said keeper to thereby lock said folding plates and forming plates in their edge folding posimember for position, and spring means connecting said arm and pusher plate and yieldably urging said arm into engagement with said cam means to releasably retain said actuating member in its latching position.

8. In a fabric edge folding device including a lever actuated forming plate and an arm actuated presser plate, said arm and lever being movable towards each other into their respective edge folding and pressing position, a base plate having an opening therein between said lever and arm, folding plates movable inwardly of the edge of said opening, and a pusher plate for moving said folding plates into edge folding position; a latch plate mounted on said lever, a keeper in said base plate, and an actuating member pivotally mounted on said lever and movable into latching position to urge said latch member sequentially into engagement with said pusher plate and said keeper to thereby lock said folding plates and forming plates in their edge folding position, cam means in said actuating member for moving said arm and presser plate into pressing position, and spring means yieldingly urging said arm into engagement with said actuating member to releasably retain the latter in its latching position.

'9. In a fabric edge folding device including a lever actuated forming plate and an arm actuated presser plate, said arm and lever being movable towards each other into their respective edge folding and pressing positions, a base plate having an opening therein between said lever and arm, folding plates movable inwardly of the edge of said opening, and a pusher plate for moving said folding plates into edge folding position; a latch plate mounted on said lever, a keeper in said base plate, and an actuating member pivotally mounted on said lever and movable into latching position to urge said latch member sequentially into engagement with said pusher plate and said keeper to thereby lock said folding plates and forming plates in their edge folding position, cam means in said actuating member for moving said arm and presser plate into engagement with said actuating member to releasably retain the latter in its latching position, means yieldingly urging said latch plate out of keeper engaging position, and cam means on said latch plate engaged by said actuating member when said latch plate is in keeper engaging position to urge said actuating member radially of its pivotal axis.

JACOB M. BERNSTEIN. CLARENCE E. ROBERTSON, JR.

References Cited in the file of this patent UNITED STATES PATENTS 

